Combined typewriting, bookkeeping, and card-perforating machine



Dec. 15, 1936. F. K. DAVIS 2,064,340

COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE Original Filed July 8, 1927 10 Sheets-Sheet l INVENTOR:

- 'ATTO EY.

Dec. 15, 1936. F. K. DAVIS 2,064,340

COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE Original Filed July 8, 1 927 10 Sheets-Sheet 2 INVENTOR:

ATTO NEY.

F. K. DAVIS 2,064,340

COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE Dec. 15,1936.

Original Filed July 8, 1927 10 Sheets-Sheet 5 IN VEN TOR ATTORN F. K. DAVIS Dec. 15, 1936. 2,064,340 COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE Original Filed July 8, 1927 10 Sheets-Sheet 4 INVENTOR:

BY ATTORNE FIG. 9;

Dec. 15, 1936. I V s 2,064,340

COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE Original Filed July 8, 1927 10 Sheets-Sheet 5 INVENTOR:

I B Y ATTORNEY F. K; DAVIS Dec. 15, 1936.

COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE Original Filed July 8, 1927 10 Sheets-Sheet 6 INVENTOR:

NE m 2.

W mu -6mm N tuna-mum 10 Sheets-Sheet 7 (\1 uavq F. K. DAVIS 0riginal Filed July 8, 1927 COMBINED TYPEWRITING, BOOKKEEPING 'AND CARD PERFORATING MACHINE u n q *0 s b a) Dec. 15, 1936.

INVENTOR:

BY ATTOR Y.

F. K. DAVIS Dec. 15, 1936. -2,064,340

COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE I 10 Sheets-Sheet 8 Original Filed July 8, 1927 INVENTOR:

5mm 2? s.

GEM: :c: 2. RE v Q F. K. DAVIS Dec. 15, 1936.

COMBINED TYPEWRITING, BOOKKEEPING, AND CARD PERFORATING MACHINE Original Filed July 8, 10 Sheets-Sheet '9 R o T N E V m ATTORNE Dec. 15, 1936. DAVlS 2,064,340

COMBINED TYPEWRITING, BOOKKEEPING', AND CARD PERFORATING MACHINE Or iginal Filed July 8, 1927 10 Sheets-Sheet 10 INVENTOR:

99 7; I Li a Ma I BY W fj Z74 ATTORN Y.

Patented Dec. 15, 1936 UNITED STATES PATENT OFFICE COMBINED TYPEWRITING, BOOKKEEPING, AND CARD-PERFORATING MACHINE Frank K. Davis, Silver Spring, Md., assignor, by

mesne assignments,

to Underwood Elliott Fisher Company, New York, N. Y., a corporation of Delaware Serial No. 414,298

71 Claims. ((31. 164-112) This invention relates to a combined typewriting, computing and card-perforating machine, and, generally stated, provides a novel organization wherein a novel card-perforating 5 mechanism is automatically controlled through the medium of computing mechanism, to the end that, while items are being accumulated in said comput g mechanism, the card-perforating mechanism is automatically caused to be actuated to record some or all of said items in recordcards, said items being thus recorded by means of perforations in said cards. This divisional case relates to the perforating feature and the mechanism for effecting and controlling same.

The preferred form of the new organization includes the well-known Underwood-Hanson combined typewriting and computing machine in which the operation of typewriter-keys may set up items in computing mechanism, which is below the typewriter and which computing mechanism is then operated to accumulate said items in one or more registers. As is usual in most computing mechanisms, the several digit-numerals of the items are set up in respect to a denominational series of register-bars or the like, each of which may have, when the item is being accumulated, an individual movement, the extent of which depends on the digit set up in respect thereto. In the Underwood-Hanson machine, each register-bar has, extending lengthwise thereof in the direction of its movement, a row of settable digit-pins, by means of which the extent of movement of said bar is determined. Thus it may be said that the digits are set up in said register-bars.

The novel card-perforating mechanism in-- cludes a nest of digit-punches arrayed in numerous denominational columns, the arrangement of which corresponds to similar columns of 40 digit-spaces of the card to be punched. A

punch-selecting plunger, pin, or equivalent device is provided for each denominational column of punches and is individually movable along said column of punches to the particular digit-punch which is to be selected and rendered efiective thereby.

An important feature of the invention resides in the provision of means whereby each punchselecting device is keyed to one of the aforesaid register-bars so that the movement-of said bar to accumulate the digit indexed therein automatically serves to move the punch-selecting device to the corresponding digit-punch. The novel card-perforating mechanism which has been evolved by virtue of the application of said feature is, as will hereinafter become evident, compact, may be manufactured at low cost, and is mechanically and consequently positively controlled and operated, as distinguished from the electrically-controlled devices of similar character heretofore used.

The Underwood-Hanson typewriting and computing machine is generally used to list groups of related items or data upon predetermined forms of work-sheets, and to accumulate at the same time some or all of the items in registers. In the usual course of the work the amounts accumulated, as indicated in the dial-wheels of the registers, are transcribed either to the aforesaid work-sheet or to other sheets. In combination with the present invention, the Underwood- Hanson computing machine or similar computing mechanism may also serve to produce perforated record-cards descriptive of said items or data, said cards being thus produced coincidentally with the listing of said items or data upon the aforesaid work-sheet and with practically no extra expenditure of labor on the part of the operator.

The card to be perforated is usually'divid ed into zones, defining the nature of the several items to be recordedtherein. Some of the items, as, for example, the different code-numbers used to designate various commodities, departments or similar classifications need, of course, not to be accumulated in registers, and are to this extent difierent from items such as amounts which are to be accumulated.

The Underwood-Hanson computing machin has the usual register-bar pin-setting or indexing mechanism controlled by the numeral typekeys, and, by means of said indexing mechanism, it is feasible to set up an item in several sets of register-bars or in any predetermined one or more of said sets of bars, each set of registerbars being usually associated with a corresponding register or accumulator as exemplified in Patent 1,190,171 to F. A. Hart, dated July 4, 1916. Thus, one set of register-bars may have all or some of its bars keyed to the aforesaid punchselecting devices, and, if, as may occur when using the preferred form of the invention, the several items which are successively set up in said one set of bars are of diflferent orders, the total accumulated in a register associated with said one set of bars will. be a nondesoript amount and may be disregarded. A register is, however, preferably to be provided with said one set of bars, as there may be forms of work in which all the items to be recorded on a card are of the same order and are to be accumulated. It is optional whether or not the set of register-bars which are keyed to the punch-operating devices are provided with an accumulator, namely, a set of computing wheels, and it will be understood that other registers operated by other sets of register-bars, as is feasible with the Underwood- Hanson indexing mechanism, and exemplified at Figure 15 of this application may serve to accumulate various ordersv of amounts, while said amounts are caused to be transferred .to the record-card through the medium of the aforesaid one set of register-bars.

The number of the aforesaid columns of digitpunches of course does not exceed the number of register-bars of the set of bars which serves to select said punches, and perforation of the card is therefore preferably effected in one zone at a time. The number of columns of punches may be less than the number of register-bars of the set to which said columns are keyed. All the register-bars that have digits set up therein have a reciprocatory movement to effect the accumulation of said digits, and are driven in said movement by means of the usual general operator, which may be either hand-operated or driven by means of the usual motor, connection between the motor and the general operator being established by means controlled, either automatically through the movements of the typewriter-carriage, or by the usual manually-operable key.

Since only one zone of a card at a time is punched, means are provided in the card-perforator mechanism for automatically moving the several zones of the card into punching relation with the nest of punches. The work-sheet in the typewriter is also divided into zones which define the nature of the items or data written therein, and it is customary to operate the usual tabulating mechanism to move the typewriter-carriage, so that the several zones of the work-sheet are successively brought into printing position. The means provided in the card-perforator mechanism whereby the several zones of the card are brought into punching position include a cardcarriage. For controlling the movements of the card-carriage, an escapement-mechanism is preferably provided and has stops which are settable. By means of said escapement-mechanism and its settable stops, the card-carriage, which may be propelled by means of a spring-motor, may bring the zones of the card therein into different predetermined punching positions.

Generally stated, the card-perforator escapement-mechanism is automatically caused to be actuated every time a new zone of the work-sheet on the typewriter is brought into printing position by tabulating the typewriter-carriage, so that a corresponding zone of the card is brought into punching position. i

The card-carriage escapement-mechanism may be so arranged that its operation may be controlled in various respects, as, for example, when it is desired that a card-zone be not skipped while tabulating the typewriter-carriage to write in a zone for which there is no corresponding zone on the card.

The cards may be automatically fed by powerdriven means from a supply-stack into the perforator-card carriage, which is designed to receive one card at a time. At the time of receiving a card the card-carriage is in an initial position, from which it is moved step by stepto bring the various zones of the card into punching position under the punches. Means are also provided so that the card may be caused to be ejected from said carriage after the punching of the card therein is completed to the extent desired. Power-driven means may also be provided for automatically returning the card-carriage to its initial starting position where it may receive a new card.

A die-plate co-operates with the nest of punches, and there is normally a gap between the punching surface of said die-plate and the ends of the punches. It is within said gap that the card is moved endwise to bring its different zones into punching position. Power-driven punch-operating means may be provided for causing the selected punches to penetrate the card, and the punches may be eitherstripped fromthe card positively or by suitable springs, one of which may be applied to each punch, the latter way of stripping the punches from the card being the preferred way herein shown.

The main features of the power-driven means for feeding the cards, one at a time, into the cardcarriage, for operating the punches and for returning the card-carriage to its initial position,

are incorporated in the novel card-perforator mechanism and may be driven by means of the same motor and power transmission mechanism that actuates the Underwood-Hanson computing mechanism. Thus there is avoided the need of providing a separate motor-drive for the perforating mechanism.

Said transmission mechanism of the Underwood-Hanson computing machine includes a reciprocatory member for driving the aforesaid general operator, and, as said reciprocatory member has a harmonic motion, its movement may be used for causing the punches to punch the card, the actual penetration of the card by the punches being so timed that it occurs and is effected by means of the aforesaid power-driven punchoperating means at the advance extremity of said motion while the various punch-selecting devices are virtually stationary or have very little motion, said harmonic motion being impressed upon said punch-selecting devices through the medium of the general operator and the aforesaid set of register-bars which are keyed to said punch-selecting devices.

This is a division of my application Serial No. 204,249, filed July 8, 1927 1,864,714, dated June 28, 1932).

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a sectional side elevation of an Underwood-Hanson computing machine and the novel card-perforating mechanism of the invention. Only such features of the Underwood- Hanson machine are shown as relate to the invention, or serve to illustrate its operation in connection with the invention. Many details of the card-perforating mechanism, which are more conveniently shown elsewhere, are omitted.

Figure 2 is a side elevation, showing details of the usual Underwood carriage propelling and escapement-mechanism.

Figure3 is a perspective diagram, illustrating the usual typewriter-carriage-controlled means whereby a clutch-pin may be automatically withdrawn at predetermined points in the carriagetravel to effect engagement of the usual driving motor with the computing mechanism.

Figure 4 is a diagram, showing in perspective a set of register-bars and indicating the means whereby the pins in the register-bars-may be set (now Patent No.

ill)

Figure 6 is a perspective view, serving to illustrate many details of the novel card-perforating mechanism.

Figure 7 is a top plan view of the novel cardperforating mechanism. There is included in said view a portion of the means whereby the N punch-selecting devices are keyed to the registerbars, said register-bars being omitted from said view, however.

Figure 8 is a diagram, showing how the circuits for the electrical devices associated with the invention are arranged.

Figure 9 is a sectional side elevation through the novel card-perforating mechanism, illustrating in detail a column of digit-punches, the means for mounting same, the means movable along said column of punches for selecting a punch, and the means for causing the selected punches to punch.

Figure 10 is a sectional front elevation taken on line Hll 0 of Figure 9, illustrating the means, as seen in said front elevation, for mounting the punches, and the means for selecting said punches and causing same to punch.

Figure 11 is a perspective diagram, illustrating details of the escapement-mechanism for controlling the card-carriage of the perforating mechanism, said details appearing in said diagram as viewed from below the perforating mechanism.

Figure 12 is a sectional side elevation through the perforating mechanism, illustrating particularly the clutch whereby the card-carriage may be engaged to effect its return movement, and means for controlling said clutch. There are also shown in this view some details of the means 101 feeding one card at a time into the card-carriage from a supply-stack.

Figure 13 is a sectional side elevation through the perforating mechanism, showing further details of the means for picking one card at a time from the aforesaid supply-stack. This view also shows the clutch whereby said means are caused to be engaged and released.

Figure 14 is a front elevation, illustrating particularly means applied to the card-carriage whereby a card is retained endwise in said carriage. Other details of the perforating mechanism and card-carriage are also shown in this figure.

Figure 15 is a diagram, showing an illustrative work-sheet and corresponding record-card, and how the usual Underwood-Hanson selector-dogs and tabulator-stops are set on the typewritercarriage in accordance with the forms on said work-sheet and card.

Figure 16 is a side elevation, showing the operated positions of a register-bar, punch-selecting device, and the means including the general operator for moving said register-bar and punchselecting device. The means which cause the selected punch to punch are also shown in operated position, and there is also shown how said latter means are operatively connected to the reciprocatory member that moves the general operator back and forth.

Figure 17 is a side elevation, showing the operated positions of parts which are involved in effecting the power-driven return of the typewriter-carriage and of the card-carriage.

Figure 18 shows, in perspective, details of the parts which constitute the clutch, whereby the,

means for feeding one card at a time into the card-carriage are engaged and dis-engaged; said parts being shown separated.

Figure 19 is a view showing, in perspective, details of the perforating-mechanism carriage, said view illustrating the carriage-returning clutch as engaged to return the carriage. This view also shows electrical contact-devices which are caused to be joined by the engagement of said clutch and which serve to maintain current through the motor until the card-carriage is fully returned.

Figure 20 is a top plan view of fragmentary portions of a card and card-carriage, and shows the latch that holds said carriage as it receives a tion of Figure 14 are withdrawn when a card is to be ejected from said carriage.

Figure 22 is a sectional side elevation through the perforator, showing particularly the operated position of the card-picker at the point of its movement when it is about to present an edge of the card to the feed-rolls, which complete the movement of said card, into its position in the card-carriage. There is also shown in this figure how pins, which retain the card in said carriage edgewise, are withdrawn while the card is being fed into said carriage.

Figures 23 and 24 are sectional plan views, showing the arrangement of parts that control the operation of theperforating mechanism and their manner of operation.

Figure 25 is a side elevation, showing the assembled clutch mentioned in the description of Figure 18, whereby the picker-knife is caused to be engaged and disengaged to feed a card into the v card-carriage.

The general arrangement of the embodiment of the invention is best seen in Figure 1, which shows an Underwood-Hanson computing machine of the type shown in numerous patents; as, for example, the United States Patent No. 1,254,627, to F. A. Hart, dated January 22, 1918; many details, which do not pertain to the invention, being omitted. In the typewriter of said machine the usual keyboard includes numeralkeys 30, which, through the usual type-actions generally indicated by the number 3l, may cause types 32 to print against a platen 33 mounted upon an axle 34, journaled in the sides of the usual platen-frame 35. Said platen-frame is shiftable up and down for case-shifting by means which include a case-shift-frame 36 and a caseshift-lever of which only the rear portion 31 is indicated. Said platen-frame 35 is mounted in a letter-feeding carriage 38, which moves to and fro upon rails 39 and 40, said rails being supported by the typewriter-frame 4|. In Figure 2, there is shown the usual spring-drum 42 for propelling the carriage and the escapementmechanism for controlling the letter-feeding steps of said carriage, said escapement-mechanism being generally indicated by the number 43.

The computing mechanism of the Underwood- Hanson computing machine is below the typewriter and includes one or more registers, which are conventionally indicated and which have dial-wheels 44. Said dial-wheels are driven in one direction only by means of one-way connections, not shown, to racks 45. Said racks are formed on bars 46, which also carry settable pins 41, whereby the extent of movement of the sev eral racks may be determined. As the extent of movement of each bar 46 depends upon the digit to be accumulated by means of said bar, there are usually provided in each bar nine pins, one for each digit. The lower ends of said pins 41 are normally flush with the lower edge of the bar 46 and thus normally clear the path of a. bar 48, which reciprocates to and fro for the purpose of moving the bars 46, which will hereinafter be called pin-bars or register-bars. To set a pin 41, it is depressed endwise, causing its lower end to project beyond the lower edge of the bar 46 and into the path of the general-operator bar 48. The pin is usually latched in its operative downwardly-projecting position (Hanson Patent 1,271,311 of July 2, 1918). The amount of movement which the register-bar receives from the movement of the general-operator bar depends, of course, upon which pin is depressed. The return movement of the bars during which the dial-wheels 44 are held stationary, by reason of the aforesaid one-way drive and the usual detenting means (not shown), is also effected by means of the general-operator-bar 48, which in this case encounters a projection 49 extending from the lower edge of the register-bar, thereby causing said bar to be returned against a stop-plate which also has slots 5| that guide the bars at their rear ends. The generaloperator bar 48 returns the register-bars to within a short distance of the stop-plate 50, the return movement of said bars being completed by means of a spring 52, which cooperates with a nose 53 on said bar to effect the full return of said bars. In this manner, when the bars are fully returned there is left a gap 54 between each register-bar and the general-operator bar, said gap permitting the register-bar to have an endwise movement sufficient to bring its pins into setting position in line with the pin-setting bars 55 of the usual pinsetting frame, generally indicated by the number 56. Normally, the pins 41 of the registerbars are not directly under the pin-setting bars 55, but occupy positions in planes midway between said bars. Each pin-setting bar 55 is part of a parallel-motion linkage actuated by a transverse shaft 51. There is one such shaft for each digit or numeral key, and each shaft has at its forward end an arm 58, whereby it may be rocked by the descent of the usual stem 59 depending from the corresponding digit or numeral key and which moves downwardly whenever said key is depressed. Figure 4 indicates the arrangement of the aforesaid parallel-motion linkages and the transverse shafts for actuating the same. Said Figure 4 also gives an indication of the manner in which said shafts may be rocked by depression of the numeral or digit keys.

The register-bars 46 are moved endwise one by one in denominational order as the typewritercarriage moves step by step through a predetermined zone, each step serving to bring the pins 4'! of a bar in line with the pin-setting bars 55. A register-bar having been brought into pin-setting position, one of its pins will be depressed or set by operation of a numeral-key, whereupon the typewriter-carriage escapes and takes another step in which the next bar is moved endwise, while the preceding bar, urged by the spring 52, returns to its normal position. For moving the registerbars endwise to pin-setting position through the letter-feeding steps of the carriage, there are provided the usual jacks 6| and push-rods 62 at the rear of the typewriter. For each registerbar there is an individual train including a jack, a push-rod, and a lever which is one of a series of levers 6,3 engaged by the lower ends of the push-rods. The typewriter-carriage moves from right to left, and as the register-bars 46 must be indexed in order from left to right, there is employed therefore, to transpose the order of impulses which the register-bars 46 receive from the rods 62, a series of transposing levers 65, each having an arm 66 which engages one of the levers 63, and an arm 61 which engages the corresponding register-bar, each of the arms 66 being connected to a corresponding arm 61 by a bail 64 (see Figure 4). The transposing device is of the type shown in United States Patent No. 1,370,360 to H. L. Pitman, dated March 1, 1921.

For determining which zones of the carriagemovement are to be effective to cause the pins in the register-bars to be set, there is provided for each zone a selector-dog 68 which, in accordance with the location of each zone on a worksheet, is shiftable and settable along the usual rods 69 and which are mounted on the typewriter-carriage, and which extend in the direction of travel of said carriage. The selector-dogs have tappets II which encounter the forward ends of the jacks 6|, and, in displacing said ends, cause said jacks to rock about'their pivots 12. If the computing mechanism is provided with more than one register, there is provided a set of jacks 6| for each register, and the array of forward ends of one set of jacks is offset from the array of forward ends of other sets of jacks, the tappets 1| of the selector-dogs 68 being correspondingly offset. In this manner a selector-dog may only co-operate with its own set of jacks. The selector-dogs 68 are tiltable downwardly about the rods 69, so that the tappets thereon may be withdrawn from the plane of the forward ends of the jacks; such withdrawal being effected under'circumstances, as, for example, while the carriage is being tabulated by means of the regular tabulator-keys 13, or while the platen is in upper-case position. For holding the selectordogs 68 in operative position, there is provided the usual frame which carries a roll 16 having conically-shaped ends and supporting the rearward ends of said selector-dogs 68, said dogs having conical rolls TI which bear upon said rolls 16. There is usually one of said frames 15 and therefore one of said rolls I6 for each set of jacks, and the selector-dogs are only raised to operative position as the rolls 1'! thereon pass over one of the frame-rolls 16. The frames 15 are mounted upon a rock-shaft 18. By means of an arm 19 projecting from the case-shift frame 36, which swings about the axis of a rod 14, the rock-shaft 18 may be rocked to withdraw the dog-supporting frame-rolls 16 when the platen is moved to uppercase position, said arm 19 co-operating for this purpose with an arm 88 extending from said rockshaft 18. Also, depression of any tabulator-key 13, mounted on a corresponding tabulating keylever T3, to raise a tabulating stop 8|, causes said rock-shaft 18 to be rocked by means of an arm 82 which is operatively connected to said rock-shaft by means of a link 83 and an arm 84, which arm 84 extends from said rock-shaft, said arm 82 extending from the universal barshaft 85 which co-operates with-the tabulating stop 8|, there being a stop for each denomination, the several stops 8I co-operating with counterstops I02 settable along the usual notched rod 64 of the typewriter-carriage. The rock-shaft 18-may also be rocked to cause the selector-dog 68 to drop whenever the usual non-add key (not shown) is operated; said key when operated being effective to swing a lever 86 of which only a fragmentary portion is shown, said lever cooperating with an arm 81 projecting from said rock-shaft 18.

The computing mechanism is in a casing 88, the upper portion of which also serves as a support for the typewriter, said casing being in turn supported upon a plate 89 which is the top platform of the supporting stand for the whole mechanism.

The general-operator bar 48 .is part of the reciprocatory frame or general operator which includes two racks 90, one at each side of the casing 88, the general-operator bar 48 spanning said racks and being supported between plates 9| fastened to the sides of said racks. Driving connection is made to the left-hand rack at 92 (Figure 1) by a reciprocatory member 93 driven to and fro by a crank 94, which is housed and guided within a transmission casing, generally indicated by the number 95. Said transmission casing 95 also houses the usual reducing gearing and the clutch, neither of which is shown,

and whereby said crank may be connected to an electrically-driven motor 96. The clutch includes an endwise movable pin 91 which projects above the transmission casing 95 and said endwise movement serves to condition the clutch to connect the crank 94 and the motor 96, that is to say, raising of the pin 91 releases the usual clutch: member and causes the crank to revolve (one revolution), the return of the pin 91 to normal causing the pin to intercept said clutch-member, to thereby effect the arrest of said crank 94 after said one revolution.

The raising of the clutch-pin 91 to initiate an operating cycle of the computing mechanism may be eifected by depressing the usual manual key 98 to swing a lever 99 downwardly about a fulcrum I00, said lever in turn rocking a transverse lever IOI, the inner end of which engages said pin 91, the latter lever IOI being pivotally supported upon the supporting stand-plate 89 by the usual means not shown in detail.

A computing machine cycle may also be initiated automatically through movements of the typewriter-carriage. Thus, for example, as the typewriter-carriage leaves a computing zone, tripping means may be actuated whereby the withdrawal of the clutch-pin 91 is effected. Figure 3 shows, in perspective, the usual tripping means, whereby movement of the typewriter-carriage effects withdrawal of the clutch-pin 91. The usual stops I02, settable along the typewritercarriage, which co-operate with'the fabulating stops 8I, are each provided with a tappet I03 which displaces the end of a lever I04 and thereby rocks the same about a pivot I05. The rocking of said lever causes, by means indicated in Figure 3, thelend I 96 of a bar I01 to be withdrawn from the end of a spring-pressed lever I08 which is thereby rocked and which thereby depresses a vertical slide I09, which in turn rocks the lever IOI to raise the clutch-pin 91. The tappet I03 of the tabulating stop may rock the lever I04 and be clear thereof in one step of the typewriter-carriage. The pin 91 need be raised only for a. moment, that is, just long enough to release the aforementioned clutch-member.

During a computing machine cycle all digits set up in the register-bars are accumulated during the forward movement of said bars. All pins 41 that were set for said digits in the register-bars are caused to be restored toward the end of the return movement of said bars, by means of a flat plate I36, which, by means of the usual linkage generally indicated by the number I31, is constrained to move upwardly with its surface always parallel to the lower edges of the register-bars; the upward movement of said plate serving to restore the pins and being effected by means of a one-way dog I38 pivoted to one of the rackbars 90, said dog displacing the end of an arm I39 which is keyed to a shaft I40 and causing said shaft to be rocked. By means of arm I keyed to said shaft I40, said pin-restoring plate I36 is raised by the rocking of said shaft. The raising of said plate having just been effected as the racks 90 reach the end of their return movement, the end of the arm I39 drops off the tip of the dog I38 again, thereby permitting said pin-restoring plate I36 to reassume its nonnal position. In the forward movement of said racks, the tip of the dog I38 is diverted, being displaced by the. end of the arm I39 in said forward movement, said dog being normally but yieldingly held by the spring I42 against a stop I44 in the rack 90. During the return movement of the register-bar, the usual carrying mechanism (not shown) becomes operative. Saidcarrying mechanism is of. the type described in the aforesaid Patent 1,254,627 to Hart.

In the means for returning the typewritercarriage by power, there is provided on said carriage a rack IIO which meshes with a pinion III rotatable on or with a shaft II2 Journaled in a bracket II3 which is attached to the typewriterframe 4|. 96. For connecting said shaft to the motor, there is provided thereon a pulley I I4, which, by means of a belt H5, is connected to an aligned pulley II6 located below the plate 89 of the supporting stand. A driving pulley II1 on the motor-shaft is located as shown in Figure l, and is connected to the pulley II6 by-means of a jack-shaft II8 which has a pulley H9 in line with the motorpulley H1, and which is connected to said pulley II1 by a belt I20. Thus, the shaft II2 rotates when the motor 96 rotates, and rotation of said motor may thereby serve to return the typewriter-carriage. The carriage-retuming pinion II I is normally operatively disconnected from the shaft H2 and is movable endwise therealong to effect connection for which purpose it is also provided with clutch-teeth which may co-operate with similar clutch-teeth of a driving member I2I which is keyed to said shaft. As the pinion III is slid toward said driving member I2I, the respective clutch-teeth of the driving member and pinion interlock, causing said pinion III to rotate and drive the carriage when the shaft I I2 is rotated.

For causing the carriage-returning pinion III to move into and out of engagement with the toothed member I2I, there is provided the usual key-controlled spring-pressed train of linkage, generally indicated by the number I22, one end of which engages a groove in the carriage-returning pinion III, and the other end of which consists of a latch-bar I23 having a notch I24, whereby the end of said train of. linkage is caught in a front plate I25 of the typewriter, said plate Said shaft I I2 is driven by the motor having a slot through which the latch-bar passes.

A spring I26 urges the latch-bar I23 rearwardly, and said latch-bar is movable upwardly sufliciently to cause the holding edge of the notch I24 to be freed of the plate I25, whereupon the pull of the spring I26 causes the engagement of the carriage-returning pinion III with the driving clutch-member I2I. The usual carriage-returnkey I21 on the spring-pressed lever I28 serves to displace the latch-bar I23 upwardly for the purpose of initiating a power-driven carriagereturn-movement, said lever being spring-pressed to yieldingly hold it in normal position. Said carriage-return-movement is terminated automatically as the carriage reaches the usual righthand carriage-stop, not shown in particular detail, but which has associated therewith a dog I29 which is splined to a rock-shaft I30, at the right end portion of. which is an arm I3I. As a cam-faced tappet I32 mounted upon the typewriter-carriage encounters said dog I29, the shaft I30 and arm I3I are caused tobe rocked, and their movement is used to withdraw the carriagereturning pinion III from the driving member I2I, the withdrawal being effected by means of linkage I33 which connects said arm I3I to the aforesaid train of linkage I22, which serves to move the carriage-returning pinion III.

The motor 96 is not a continuously running motor when the machine is in operation, but is only run when the general operator is to be actuated to accumulate, an item; or when the For starting the motor when a carriage-returnmovement is to be initiated, and for maintaining the operating circuit for said motor independently of the switch in the transmission-casing when a computing machine cycle and carriagereturn-movement are initiated simultaneously,

there is provided another switch generally indicated by the number I 34, Figure 1. Said switch is caused to be closed by the clutch-engaging movement of the train of linkage I22, which movement ensues upon pressing the carriageretum-key I21. In order that the movement of said linkage may control said switch, there is the usual controllinglink, bar or rod I35 extending from said switch to said train of linkage. Said controlling link I35 engages a springpressed switch-member and by its endwise displacement serves to permit closure of the switch when the carriage-retuming clutch is closed and also to open the switch when said clutch'is opened.

a The novel card-perforating mechanism and its relation to the computing mechanism will now be described.

The card-perforating mechanism is designed to produce perforations I43 in a record-card such as is shown in Figure 15. The card is divided into zones which define the items to be recorded therein. In said Figure 15 there is also shown an illustrative work-sheet in position around the typewriter-platen, said work-sheet being also divided into zones which define the items to be written thereon. As will be shown presently, some of the items written on the worksheet are also accumulated in one or more regiswhile writing the items on the work-sheet, the

novel card-perforating mechanism is controlled to the end that some or all of the items written on the work-sheet will be recorded in the recordcard by means of the perforations I43. In the card-perforating mechanism, a gang or nest of punches I45 is provided, said nest of punches being arranged in say five denominational columns, as herein shown, each column having nine punches, one for each digit.

The denominational columns of punches extend in a direction which is the same as the di rection of movement of the register-bars, and it is a feature of the invention that the selection of the punches is controlled by the extents of movements of some of the register-bars. A punchselecting device which may co-operate with a register-bar is accordingly provided for each denominational column of punches, said device serving to render efiective in said column the punch which corresponds to the digit indexed in the corresponding register-bar. Said punch-selecting device is preferably in the form of an endwise movable slide I41, each slide carrying a plunger I40, which may be made to register with any one of the several punches by moving said slide I 41 endwise. The lower end of the plunger I40 normally clears the upper ends of the punches and is held clear by means of a spring I49 which normally retains the plunger in its upward position against suitable stopping means which may be in the form of a turned-over tab I50 reacting against an adjacent edge of the sliding bar I 41 (Figure 10).

If, as is in the computing mechanism herein shown, the intervals or spaces which define the extents of movements of the register-bars are not the same as the intervals or spaces between the punches but are actually somewhat less than said spaces, a multiplying leverage may be used as part of the means that serve to connect each punch-selecting slide I41 to the register-bar which is to control the movement of said slide. The means connecting a punch-selecting slide I41 to a register-bar consists therefore of a lever I5I swingingabout a fulcrum I52, said lever being connected to the slide I41 at a point further from the fulcrum than is the point to which is connected a link I 53 extending from said lever to the corresponding register-bar. On account of the are which the first-mentioned point describes as the lever swings about its fulcrum, said first-mentioned point is not directly connected to the sliding bar but is connected thereto by a link I54. Other means may be used to connect the slide I41 to corresponding registerbars for simultaneous movements of corresponding but dissimilar extents, as, for example, compounded pinions and racks, the racks forming part of the slides and register-bars.

In thecomputing mechanism herein shown, there are provided three registers, each of which includes eight register-bars. To illustrate the invention, the punch-selecting slides I41 are shown as being controlled by and connected to-the last five bars of the middle register. There may be a column of punches for each register-bar, or there may be a smaller number of punch-columns than the five columns herein shown. As' best shown in Figure 4, the transverse spacing of the columns of punches, that is, from column to column& is less than the transverse spacing of the register-bars, so that it is necessary to make the rearward endsof the connecting links I53 converge. It is also desirable that the nest of punches tion, in respect to the group of register-bars which control the selection of said punches. The punchselecting slides I41 may be retained and guided in slotted plates I55 which are-incorporated in the general structure of the perforating mechanism. Cross-pieces I56 attached to said plates may bridge the slides I41 and the slots in which 7 said slides are guided, thereby serving, in consaid collar reacting in turn against the upper junction with the bottom of said slots, to retain the slides edgewise.

The punches I have their upper and lower end portions guided respectively in plates I51 and I58, said plates being separated by bars I59 which are also incorporated in the general struc ture of the perforating mechanism, as indicated in the drawings, and which, with said plates I51, I58, form a frame for retaining the punches. A die-plate I68 co-operates with the punches in punching a card and has its shearing surface flush with a table-like surface I6I of what may be called a body-member I62 of the perforating mechanism.

The bottom-surface of the lower punch-guiding plate I58 is separated from the level of said table-surface I6I by a gap I63 to permit the passage of a card beneath the lower ends of the punches, said separation being effected by means of a shim I64 between said lower plate I58 and table-surface NH and an elevation I65 upon which the forward ends of the spacing bars I59 rest (see Figure 9). For retracting the punches after they have penetrated a card, there is provided for each punch a spring I66, the lower end of which reacts against the lower punch-guiding plate I58 and the upper end of which reacts against a shoulder formed by a collar I61 around the body of the punch, the opposite shoulder of punch-guiding plate I51 when said punch is fully retracted by said spring.

It is evident that the several punch-selecting slides I41 with their punch-operating plungers I48 will have moved to such positions that said. plungers are above certain punches when the computing mechanism register-bars 46,which control the movements of said slides, have reached the limit of their forward movements,

and it is-also evident that the punch under each plunger I48 then corresponds to the pin or digit which was indexed in the corresponding reg-- ister-bar. At the end of the forward movements of the register-bars, the crank, which drives the general operator of the computing mechanism, is at dead center in respect to the reciprocatory member 93 which connects said crank to said general operator, so that at the end of the forward movement of the register-bars and punchselecting slides I41, the motion of said slides is zero. As the crank 94 approaches and leaves said dead center, it is feasible, therefore, on account of said zero-motion to depress the punchcperating plungers to effect perforation of the card. The movement of the crank 94, therefore, as it approaches and leaves said dead center, is used as best shown in Figure 16, to actuate a train of plunger-depressing mechanism which is terminated at one end by a downwardly movable plate I68 whose surface includes an area within which the punch-operating plungers I48 move, the other end of said train terminating in a lever I69 pivotally mounted on the computing mechanism transmission-casing 95 and carrying a roll I18 which, for displacing said lever, is engaged by the'end of the crank 94 as said crank approaches and leaves the aforesaid dead center.

The plunger-operating'plate I68 is preferably moved in such manner that its surface is always perpendicular, throughout its movement, to the plungers I48 which it serves to depress. It is accordingly connected to a parallel-motion linkage best shown in Figures 1, '7 and 9. Said'linkage includes two shafts I1I extending transversely of the plate, each shaft having at one end thereof a bell-crank-lever I12, and at the opposite end an arm I13. Said shafts I1I may be journaled in opposite plates 256 secured to the outer sides of the punch-frame-bars I59. The bell-crank-lever-arms which extend in a general horizontal direction and the arms I13 at the opposite ends of the shafts are pivotally connected to upturned ears I14 of the plunger-depressing plate I68. Downwardly-extending arms of the'bellcrank-levers are connected by a link I15, so that both shafts "I move in unison, thereby to obtain the desired parallel motion of the plunger-depressing plate I68. The forward bell-crank-lever may have its arm which is connected to theplate I68 prolonged in an extension I16, as shown in said Figures 1, '1 and 9, said extension being included in the previously-mentioned train of plunger-depressing mechanism, which also includes a jack-shaft I11 journaled in brackets I 18 secured to the top plate '89 of the machine-supporting stand, as best shown in Figures 1 and 7. Said jack-shaft I11 serves to transfer the line of action of said train of plunger-depressing mechanism from a point opposite the lever I69 to a point below said extension I16 of the bell-crank-lever I12.-- There is accordingly keyed to said jack-shaft opposite the lever I69 a downwardly-extending arm I19 connected by a link I88, preferably of adjustable length, to said lever I69. An arm IBI is also keyed to said jack-shaft at a point below said extension I16 and is connected to said extension by a link I83. By employing the plunger-depressing plate I68,

which embraces all the plungers, all the punches which are selected by said plungersare caused to punch simultaneously by operation of said plate. A card to be perforated is therefore punched by zones, that is to say, all the columns of a zone in whichdigits of an item are to be recorded by perforations have the perforations effected therein simultaneously in one operation of the v plunger-depressing plate I68, this mode of operation being in accord with accumulating the denominational digits of an item simultaneously during the reciprocatory movement of the register-bars 46.

The card is, as already stated, divided into item-defining zones and the means, and the manner of operation thereof, whereby a card is taken from a supply-stack and fed transversely of the punches zone by zone, will now be described. Means for holding a supply-stack of blank cards, from which the cards to be perforated may be drawn, include a rearward extension I of the table-like surface of the perforator-bcdy-member I62 upon whicha stack I86 of blank supply-cards may rest. The lateral arid rear sides of the stack may be retained by pins I83 projecting upwardly from the surface upon which the stack of cards rests. The front side of the stack abuts the throat-block I81, which bears upon the card-supporting surface of the body member I62 only at its end portions, so as to afford a narrow aperture I88, which will permit the passage of only one card at a time. The throat-block is cut away or relieved to define the (ill limits I8! of said aperture lengthwise of the throat-block, as shown in Figure 6.

As best shown in Figure 12, the inner side of said block I81 may have attached thereto beyond said limits of said aperture stack-retaining plates I89, the tops of which may be even with the tops of the pins I86 so that a supply-stack of a height corresponding to the height of said pins may be provided for.

The cards are slid one at a time from the bottom of the supply-stack and pushed through the throat-aperture I88, so that the leading edge of the card may be gripped by revoluble upper and lower feed-rolls I90 and I9I which continue the forward movement of the card in a manner to be presently described. For thus pushing one card at a time towards said feed-rolls, there is provided a reciprocatory card-picking device whose general construction is substantially the same as similar devices that are well known. Said device consists of a member I92 mounted for reciprocatory movement in the perforator-body-member I62 in such manner that a surface I93 thereof is substantially flush with the table-surface of said body-member. Secured to the rear edge of said reciprocatory member I92 is a picker-knife I94 having a shear-like edge which projects above said surface I93 to such an extent that only one card at a time may be picked or pushed from said stack during the forward movement of said device. To enable said picker-knife to readily engage the edge of the bottom card, it may be well to elevate the surface I93 of the card-pickermember I 92 slightly, say five thousandths of an inch, above said table-surface. Said card-pushing reciprocatory member I92 may slide in guides formed by depressions I95 in the card-supporting surface of the extension I85 and may be retained in said guides by means of a rod I96, which is held in a downward extension I9'I of said member, and is guided in opposite bearings I98 of the body-member I62 of the perforator-mechanism.

A weight I46 presses downwardly on the supplystack and thereby facilitates the pushing of the lower card through aperture I88. reciprocating the member I 92 will be described later.

What maybe called a card-carriage is employed to move the card zone by zone pastthe punches after said carriage receives a card from the sup ply-stack. Said carriage is mounted for movement in a direction at right. angles to the direction from which it receives a card from the supply-stack. In the preferred form of the invention the card-carriage is of such form that it moves the card lengthwise by pushing upon one corner thereof, said card-carriage being therefore preferably in the form of a rod I99 having several attachments and formations to be described, and an upward projection I99 whereby said carriage may push against said corner of the card. As best shown in Figure 19, said projection I 99 is formed by a bent-over portion of a strip 200, which is elevated sufficiently above the top surface of the carriage I99, as shown in Figure 12, to form with said surface a card-retaining slit in which a lengthwise edge of therard may be received. When the card-carriage is to receive a; card from the supply-stack, it is held in such position, by means to be presently explained, that the projection I99 is just to the right of a line through the right edge 20I of a card as it is advanced from the supply-stack. By means of a spring-motor 202, Figure 19, and draw band 203, the card-carriage is drawn toward the left to bring its several The means for zones into punching position under the punches. Before describing the means whereby the cardcarriage is positioned for said several zones, it may be stated atthis point that the upper feedroll I90 is caused to be raised slightly to free the card, so that said card may be free to move endwise with the card-carriage after having been advanced by the feed-rolls into position in said carriage. The means whereby the upper feedroll I90 is thus raised will also be described presently.

An escapement-mechanism controlled by operation of the tabulating keys of the typewriter is provided to effect the zone-determining steps of the card-carriage. Said mechanism is controlled by operation of the typewriter-tabulating keys for the reason that when the typewriter-carriage is tabulated to a new zone, the card is, as a rule, also tabulated to a corresponding zone, there being, however, exceptions, as, for example, when the typewriter-carriage is tabulated for a zone on the work-sheet in the typewriter for which there is no corresponding zone in the card. In such case, the escapement-mechanism may be operated to move the card-carriage idly in a manner which will be explained.

The card-carriage escapement-mechanism includes a number of settable stops 205, in the form of pins, which may be pushed into and retained in any one of a series of holes 206 in the card-carriage I99, and disposed along the upper surface thereof, the holes being spaced the same as the spacing of the. denominational columns of the punches and of the card. A vibratory dog-member 20! carrying a holding dog 2I4 and a stepping dog 2I5, said does being of the type usually employed in escapement-mechanisms, co-operates with the stops 205 to hold the carriage in its several zone-determining positions and also to permit the escape of said carriage from position to position. The mode of operation of said reciprocating dog-member and its dogs may be best understood by reference to Figure 11, which is a perspective view of the escapement-mechanism as seen from below the card-perforating mechanism. Whenever a tabulating key of the typewriter is operated there is exerted a pull upon a link-2I0, said pull, through the medium of an arm 2 attached to said link and keyed to a rock-shaft 2 I2, serving to rock said shaft, so that another arm 2 I 3 also keyed to said shaft and having its end pivotally connected to the dog-member 201 may push said dog-member forwardly. The fixed or holding dog 2 is thereby moved just ahead of and against whichever stop 205 was just previously engaged by the spring-pressed stepping dog 2I5 pivotally mounted upon said dog-member 201. As the fixed or holding dog 2 I4 thus moves ahead of astop 205, the spring-pressed stepping dog 2| 5 escapes from said stop, and by its spring 2I5 is caused to be diverted to the opposite side of said stop. When the direction of movement of the dog-member 201 is caused to be reversed by withdrawing the pull on the link 2I0, the fixed or holding dog 2 is withdrawn from the stop, whereupon the carriage escapes, and, under the pull of its spring-motor 202, moves until the succeeding stop 205 thereon encounters the stepping dog 2I5 and swings said stepping dog to its holding position, wherein said stepping dog strikes against a. stop-plate 2I6, which may be supported by the dog-member 201. One end of the reciprocating dog-member is, as already explained, connected to the arm 2I3. The opposite end of said dog-member is reduced to the form of a rod 2", which may be conveniently guided in the plate I55 that guides the front ends of the punch-selecting slides I41. A spring 2I8, which may be applied as shown in Figure 11, causes the dog-member 201 to react against the pull of the link H0 and serves, when the pull of said link is withdrawn, to pull said dog-member to its normal position wherein a collar 2I9 on the rod 2I1 formed on said dog-members bears against said plate I55. One end of said spring 2I8 is anchored to a pin 220 projecting from the dogmember 201, and the other end of said spring may be anchored to a screw 22I, which may also serve to secure the arm 2I3 to the shaft 2 I2.

In order that a pull may be exerted upon the link 2I0 whenever a typewriter-tabulating key is operated, said link is connected to the arm 82 of the typewriter denominational tabulator-mechanism at the rear of the typewriter. By means of the universal bar 85*- of said tabulator-mechanism, the outer end of the arm 82 is swung upwardly every time a denominational stop 8| is elevated by depression of a tabulator-key 13, said universal bar 85 being operable by any one of the stops BI and keyed to the rock-shaft 85 to which said arm 82 is also keyed. The upward movement of said end of the arm '82 causes the aforesaid pull upon the link 2 I0. The end of said link 2I0 connected to the arm 82 has a pin-andslot connection 209 to said arm, as shown in Figure 1, to permit movement of said link independently of said arm 82, for a purpose which will later become evident.

Referring to Figure 3, the elevation of any one I of the tabulating stops 8i into the path of the counter-stops I02 serves to arrest the typewritercarriage. The lever I04, which functions to automatically initiate a cycle of the computing mechanism by movement of the typewriter-carriage, is displaced by a counter-stop I02 when the tappet I03 of said stop passes beyond the field of the stops 0|, a pawl 222 on said lever being disposed beyond said field of stops 8I. In this manner, every time a numeral key is depressed for writing in the last column of a work-sheet zone, the carriage takes the usual letter-feed step, thereby causing a counter-stop I 02, which has functioned to arrest the typewriter-carriage, to pass out of the field of the stops BI, and a computing-machine cycle to be initiated, during which the punches of the perforator-mechanism are caused to penetrate the card, in accordance with the digits of the items set up to be accumulated during said cycle. After the perforator-card-carriage has moved the several zones of the card into punching position to be punched during corresponding cycles of the computing mechanism, it is required that the punched card be disposed of, and the .card-carriage returned to its initial position to receive another card. In the preferred way of disposing of the card, there are employed revoluble card-feeding rolls 224 and 225 disposed at.

what may be called the delivery end of the tablesurface IBI of the perforator-body-member I62. If no carriage-escapement stops 205 are set for intercepting the card-carriage after it leaves the position for the last zone to be punched, said card-carriage will, with the card, move towards said feed-rolls 224 and 225 when the card-carriage escapement-mechanism is operated, thereby causing the advancing edge of the card to be presented to said feed-rolls. Further movement of the card-carriage is arrested after it has presented its card to the feed-rolls while said feedrolls deliver the card into a suitable receptacle 220, which may. be attached to the aforesaid delivery end of the perforator-body-member I62, said receptacle being indicated in Figures 14 and 21. For thus arresting the card-delivering movement of the card-carriage, there may be provided an adjustable stop 221 in the form of a screw threaded into a lug 228 projecting from the perforator-body-member I62.

There may be occasions also when it is desirable to release the card-carriage, so that it may deliver its card to the delivery feed-rolls 224 and 225 before all the zones of said card have been presented in punching position; in other words, it may be desirable to release said card-carriage, so that it may deliver its card at any time at the will of the operator. A card-releasing movement of the dog-member 201 of the escapement-mechanism is therefore made of such extent that the dogs 2I lv and 2I5 thereon are completely withdrawn from the path of the stops 205 whenever a card is to be delivered. In this way there is avoided the necessity of withdrawing said dog-member once for every stop 205 that has not yet passed the dogs of said member when a card is to be delivered before all the zones thereof have registered at the punches.

The escapement-dog-member 201 is therefore fully withdrawn from'the path of the stops 205 for releasing the carriage for card-delivery, such full withdrawal being effected irrespective of whether the carriage is at the end of its zone-determining travel, or in intermediate position between the beginning and end of said travel. Suitable linkage, operable by a key at the typewriter-keyboard, may be provided to effect full withdrawal of the dog-member 201. In the illustrated form of the invention, operation of the carriage-return-key I21 is used to effect withdrawal of the'dog-memher 201 for the reason that when the card-perforator-carriage is released to deliver its card, it is also desirable to initiate a return movement of the typewriter-carriage because the typewriter-carriage starts from an initial position when the card-carriage starts its zone-determining travel. Therefore, as a sequence to operation of the carriage-return-key I21 at the typewriter-keyboard, there is caused to be initiated a power-driven return movement of the card-perforator-carriage by means which automatically become effective as the carriage reaches the end of its card-delivering movement. Before explaining said ,latter means, however, the means whereby operation of the carriage-return-key I21 causes withdrawal of the dog-member 201 will be explained. The endwise movement of the switch-controlling link I of the typewriter-carriage-return-engaging linkage I22 is used to effect withdrawal of the perforator-escapement dog-member 201. drawal is best eifected by releasing a latched spring-pressed member incorporated in the cardperforator and which may be in the form of a bar or rod 230, best shown in Figure 9, said rod having one end pivotally connected to an arm 23I keyed to a rock-shaft 232 journalled at the end portion adjacent said arm in a bracket 233 projecting from the rear side of the perforator-bodymember, said shaft being journalled at the other end in a bearing 230 (see Figure 6) projecting from the under surface of said body-member. The forward end of said rod 230 has a latching notch 235 engaging a suitable slot in the plate I55 when said bar 230 is in its normal position. Said bar 230 transmits the movement which it derives from the pull of a spring 236 upon the arm 23 I, to the dog-member 201 by means of the shaft M2,

The withv which, as already explained, also serves to displace said dog-member during operation of a typewriter-tabulating-key. Endwise movement of the dog-member withdrawing bar 230 accordingly rocks said shaft 2l2 by means of an arm 238 which is keyed to said shaft, said arm being, for this purpose, engaged by a pin 239 projecting from the side of said rod 230. The notched end of the dog-withdrawing rod 230 is raised to release said rod, and for thus raising said end, there is provided a bell-crank-lever 231 having an arm 240 disposed to lift the end of said bar, and an upwardly-extending operating arm 24I having an end of such shape that said end may be overridden by a pin 242, and thereby escape from said pin when said pin has move-d forwardly sufficiently to rock said bell-crank-lever 231. The pin 242 is constrained to describe a path which will cause it to thus override said arm 24I by means of a cam-shaped edge 243 of a link-member 229 from which said pin 242 projects, said edge cooperating to this end with the edge of a suitable opening in the plate I55, in which said link-member is guided.

As shown in Figures 1 and 17, the link-member 229 is part of a link 223, which, in turn, is part of a train of connections (Figures 8 and 17) from the switch-controlling bar I35 of the typewriter-carriage-return mechanism, said connections including an'arm 22I aligned with and engaging said rod I35, and another arm 209 aligned with and connected to said link 223, said arms being, in the present form of the invention, spaced apart and connected by a shaft 208 to which each of said arms is keyed. Said shaft may be journalled in bearings 204, which may project'from the rear of a casing I84 that houses the switch I34 for the typewriter-carriage-return mechanism. A spring 208 serves to restore said train of connections to normal as the switch-controlling bar I35 is withdrawn concomitantly with the conclusion of the typewriter-carriage-return movement. During this restoration the pin 242 idly overrides the end of the arm 24I of the bell-crank-lever 231 irrespective of whether or not said lever has reassumed its normal position.

The reason for having the pin 242, in its forward movement, override and escape from the tip of the operating arm of the bell-crank 231 is to permit the unimpeded restoration of the dogmember actuating rod 230 without effecting or tending to effect restoration of the typewritercarriage-return-engaging linkage I22, the operation of which has previously released said rod 230. Thus the typewriter-carriage-return linkage I22 may remain in its operatd position, as shown in Figure 17, until the typewriter-carriage is fully returned, because, as is evident, particularly with a long typewriter-carriage, the return of the typewriter-carriage may take more time than the time necessary to return the card-perforator-carri'age, the restoration of the escapement-c-ontrolling rod 230 being effected upon completion of the return of the card-perforator-carriage. Figure 17 shows the rod 230 in its unlatched position, as effected by operation of the typewriter-carriage-return-engaging linkage I22, and said figure also shows how the unlatching and endwise forward movement of said rod have effected the withdrawal of the dog-carrying escapement-member 201. The restoration of the rod 230, and consequently of said dog-carrying member 201, is conveniently efiected by and during the forward movement of the reciprocatory cardpicker-member I92.

It will now be seen that the rock-shaft 232 and the arm 23I thereon connected to the dogwithdrawing rod 230 serve as operating connections between said rod 230 and the reciprocatory card-picker-member I92, the operating connection being completed by means of a cam-shaped arm 245 keyed to said rock-shaft 232 and disposed in the line of movement of the reciprocatory card-picker-member I92. As shown in Figures '7 and 12, a stud 246, which also serves as a pivot for a connecting rod 241 whereby the reciprocatory member I92 may be moved back and forth, may engage the cam-shaped arm 245 at a predetermined point in the forward movement of said member, said point being determined by the shape of the cam-arm 245. As said stud 246 engages said cam-shaped arm 245 the latter is caused to be displaced, thereby rocking theshaft 232 and effecting restoration of the escapement-dog-carrying member 201 by withdrawing the rod 230 from the arm 238 and causing said rod to be latched again.

Means for retaining and guiding the card in its path of movement from its initial position, to which it was advanced from the supply-stack, to the card-ejecting feed-rolls 224 and 225, include the already-described strip 200 which forms a card-receiving slit extending lengthwise of the card-carriage, and also forming the projection I99 whereby the card is pushed along. The edge of the card opposite said card-receiving slit is retained and guided along the path of zone-determining travel by means of retractible pins 249, a marginal guiding strip 250 and another guide-strip 25I. The retractible cardguiding pins 249 are caused to be withdrawn during the advance of a card from the supplystack to the card-carriage, and the marginal guiding strip 250, in order to permit said ad- Vance, merely overlies the margin of said card, and does not serve to engage and guide the edge of the card; the retractible pins 249 serving the purpose of guiding and retaining said edge of the card; and said marginal guiding strip 250 preventing the margin of the card from curling up or becoming otherwise distorted. The other guide-strip 25I, which is disposed further along the path of card-travel, serves to guide both the edge and margin of the card, and may be secured to a side edge 252 of the card-perforator body-member I62, as best shown in Figure '7. The first marginal guide-strip 250 may be secured to the throattblock I81, as best shown in Figures 7 and 12. The card may also be guided during its advance from the supply-stack to the card-carriage by a lateral guide 253, which engages the right edge and margin of the card.

The entry of the advancing edge of the card into the slit formed by the strip 200 of the perforatorcarriage is facilitated by an intermediate guide 254, which may be formed from the same blank from which the lateral guide 253 is formed, the two guides 253 and 254 being joined at 255, see Figures 6 and 7. The opposite end of said intermediate guide 254 may be attached to one of the plates 256 at 251, as best shown in Figure 6. To prevent over-shooting of the card when the carriage is stopped in zone-determining positions, there is provided a retractible card-holding finger 258, which engages an edge of the card at the corner opposite the corner engaged by the card-pushing projection I99 of the card carriage, said finger being also mounted on said carriage and traveling therewith. In order that the card-holding finger 258 may be withdrawn 

